tldr; The VOC and chemical destroyer. 4-stage gas filtration, HyperHEPA. Medical-grade for MCS sufferers.
Check pricesScores based on sentiment analysis of topic-related comments
Best praise vs top criticism for IQAir GC MultiGas
“I just got an Alen Air 25i for my little office and it’s been a really great unit for the last few weeks. Alen sells bundle “whole house” solutions that might work for you. For me, I put a smart air blast in my living room, a iqair GCX in my kitchen, iqair gc in my dining room/front foyer, Alen 25i in the office, Coway Air Mega 300 and 400s in our spare bedrooms, an iq air health pro plus in the master bedroom, and 4 clean air luggable cr boxes spread out throughout the house. Do I have an addiction to buying air purifiers? Yes. Very weird addiction. But all were bought off Facebook marketplace and were pennies on the dollar compared to new. Just had to give them a good wipe down and put in a new filter.”
“I came here to say… exactly what this guy just said. If you told me I was entering a room full of contaminants and could only have one unit to purify the air, that unit would be a 3M respirator. But if it was a PURIFIER it would be an IQAir. Their CEO has done stunts with gas and exhaust fumes and all sorts of shit in a sealed room and he just sits there inhaling from the output of a MultiGas. So if you want the ABSOLUTE CLEANEST AIR a consumer unit can provide… that’s the unit. But it has mediocre CADR in general for its size. And is expensive.”
265 Reddit opinions analyzed • Last updated 2/24/2026